A fatal car-pedestrian accident has left one person dead and many in the hospital. This accident happened on 43rd Avenue just south of Maryland. It took as many as 40 firefighters to treat all the patients.

"Right now, all I can say is that I'm numb like I feel so bad because I witnessed that!"

Sophie Ortiz says she is still shaken up talking about the four-vehicle fatal accident in which she, her husband and her four young grandchildren were involved.

“There was a black vehicle that was southbound;, it left the roadway, up onto the sidewalk where it struck a group of pedestrians came, back into the roadway sideswiped a white van and then continued southbound another 100 yards or so, where it collided with two additional vehicles,” said Phoenix Police Sgt. Jonathan Howard.

Ortiz and her husband, Antonio, were in that van that was sideswiped. Before they were struck, they saw when the driver of the black car hit those five pedestrians.

"And then all of a sudden, I seen their stuff flying everywhere and I seen one of them like tumbling in the air and I'm like what the...,” Ortiz said.

"I just seen someone up in the air; then when I looked back a little bit to the right, that's when I car was coming my way," Antonio said.

Sadly, one of those pedestrians -- 17-year-old Haley Newton -- was killed.

Many others rushed to the hospital.

“A total of 12 patients, two of which ended up being trauma codes, meaning they were not breathing did not have a pulse while we were on scene ...,” says Phoenix Fire Capt. Jake Van Hook said

The Ortizes said they're grateful they and their grandchildren are OK but say their hearts goes out to those who weren't as lucky.

"I feel sorry for the family."

"They were just chasing each other it looked like aggressive chasing really bad," said Mariah Torres, a witness.

Torres and her sister Ceceilia were on their way to get pizza when they saw what looked like the Camry and another car involved in a road rage incident.

"It looked like that because they were both going super fast and wanted to be next to each other," said Ceceilia Torres.

While investigators say they did get similar reports, Phoenix Police say no evidence so far suggests another car was involved in the crash.